The Material Girl isn't mincing any words. She's had a lot to say about Lady Gaga this year: First dubbing Gaga's song "Born This Way" "reductive," only to later gush, "I love her. I do love her," before 180-ing again and declaring, "I have the best fans in the whole world. So take that, Lady Gaga!...I invited her onstage to sing with me, but she turned me down." A new feud to add to the old: Sir Elton likened her to a "f--king fairground stripper." And we don't think he meant that as a compliment.